title: Isolation of a covalent intermediate in beta -lactamase I catalysis.
mesh_terms: D001409:Bacillus cereus / Q000201:enzymology*; D006863:Hydrogen-Ion Concentration; D007700:Kinetics; D010405:Penicillinase / Q000378:metabolism*; D011485:Protein Binding; D001618:beta-Lactamases / Q000378:metabolism*
chemical_list: D010405:Penicillinase; D001618:beta-Lactamases